65493647 has 2 divisors, whose sum is σ = 65493648. Its totient is φ = 65493646.

The previous prime is 65493643. The next prime is 65493661. The reversal of 65493647 is 74639456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65493647 - 2² = 65493643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65493598 and 65493607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65493643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32746823 + 32746824.

It is an arithmetic number, because the mean of its divisors is an integer number (32746824).

Almost surely, 2^65493647 is an apocalyptic number.

65493647 is a deficient number, since it is larger than the sum of its proper divisors (1).

65493647 is an equidigital number, since it uses as much as digits as its factorization.

65493647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 65493647 is about 8092.8145289510. The cubic root of 65493647 is about 403.0878659543.

The spelling of 65493647 in words is "sixty-five million, four hundred ninety-three thousand, six hundred forty-seven".